A mechanical engineer, an electrical engineer and a computer science 
engineer were in a car driving to Vegas.  Their car broke down on the 
freeway.  The three men pulled the car over and discussed how to handle the 
situation.

The mechanical engineer was convinced that something was wrong with the 
struture of the car and they should work on that to fix the car.

The electrical engineer was convinced that something was wrong with the 
internal workings of the car and they should check all the wiring to fix the 
car.

The cs engineer was quiet for a few moments and then he said, "I think we 
should get out of the car and get back in."